# IRB660

**URL:** https://tech-community.robotics.abb.com/t/irb660/4761
**Category:** RobotStudio
**Created:** [March 31, 2012, 6:36am UTC](https://tech-community.robotics.abb.com/t/irb660/4761 "2012-03-31T06:36:12Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![satishkamble85](https://avatars.discourse-cdn.com/v4/letter/s/e99b99/32.png) [@satishkamble85](https://tech-community.robotics.abb.com/u/satishkamble85)
#### Post date: [March 31, 2012, 6:36am UTC](https://tech-community.robotics.abb.com/t/irb660/4761/1 "2012-03-31T06:36:12Z")

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i m facing problem in using IRB660 when i m inserting this robot in robot studio one msg popup i.e.“the library of type IRB640 for the mechanical unit 'ROB\_1’in the robot system’IRB660\_180kg-3.15m\_3’is not defined.you must manually search for the library.” so please replay if any one knows.

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### Author: ![Henrik\_Berlin](https://dub1.discourse-cdn.com/flex005/user_avatar/tech-community.robotics.abb.com/henrik_berlin/32/1011_2.png) [@Henrik\_Berlin](https://tech-community.robotics.abb.com/u/Henrik_Berlin)
#### Post date: [April 11, 2012, 4:55pm UTC](https://tech-community.robotics.abb.com/t/irb660/4761/2 "2012-04-11T16:55:43Z")

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Which version of RobotStudio are you using? Please describe the exact sequence of steps you take.